phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'fb63c8d648a4b0d0540d3c25f24cb968' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('fb63c8d648a4b0d0540d3c25f24cb968', -1, 1765906873, 1765906873, 'd849d836', -4, 0, 0)

Line : 187
File : sessions.php